将用户输入列表按顺序与重复项进行比较

问题描述

我尝试以特定顺序（例如多项选择测试）取A，B或D的答案，并让用户输入他的答案。之后，我想它创建第三个列表，打印出什么是正确的和错误的。这是我到目前为止。

  userAnswersList = [] 
 correctAnswers = ['A'，'C' ，A，A，D，B，C，A，C，B当用户AnswersList  userAnswers = input（'''''''''给我每个答案总共20个问题我会让你知道你有多少你错过了。）
 userAnswersList.append（userAnswers.upper（））
 
 correctedList = [] 
 for i in userAnswersList：
 if i in correctAnswers：
 correctedList.append（i）
 else：
 correctedList.append（'XX'）
因此，我的最终结果将是具有'X'的已更正列表，其中'X'在那里他们错过了答案，如果是正确的，它只是把用户输入的地方。 
所以在用户输入他们的20个答案后，它将看起来像
 ['A'，'C'，'A'，'XX'，'D'，'B'，'C' XX'，'C'，'B'，'A'，'XX'，'C'，'A'，'D'，'XX'，'B'，'B' ] 
如果他们在该订单中漏了5个问题
 
 
 
   b 
 
再次感谢您的帮助，我能够解决我的问题，您的帮助和一些很好的答案。我使用Nicks解决方案，因为这是我们如何学习它。
 
 
 
我会尝试其他人，所以我可以习惯他们。
解决方案
在userAnswersList中不使用：
  
  
您可能会发现更容易遍历数组并检查值是否相等，例如： 
  for i in range（len（userAnswersList））：
 if userAnswersList [i] == correctAnswers [i] ：
 correctedList.append（userAnswersList [i]）
 else：
 correctedList.append（'XX'）
  
 
I am trying to take a set of answers either 'A' 'B' 'C' or 'D' in a specific order such as a multiple choice test and have the user input his answers.  After I would like it to create a third list and print out what was right and wrong.  Here is what I have so far.
 userAnswersList = []
 correctAnswers = ['A', 'C', 'A', 'A', 'D', 'B', 'C', 'A', 'C', 'B', 'A', 'D', 'C', 'A', 'D', 'C', 'B', 'B', 'D', 'A']

 while len(userAnswersList) <= 19:
     userAnswers = input('Give me each answer total of 20 questions I\'ll let  you know how many you missed.')
     userAnswersList.append(userAnswers.upper())

correctedList = []
for i in userAnswersList:
    if i in correctAnswers:
        correctedList.append(i)
    else:
        correctedList.append('XX')

print(correctedList)
So my end result would be the corrected list with a 'X' in place where they missed the answer, If it is right it just puts the user input in that place.So after the user input their 20 answers it would look like['A', 'C', 'A', 'XX', 'D', 'B', 'C', 'XX', 'C', 'B', 'A', 'XX', 'C', 'A', 'D', 'XX', 'B', 'B', 'XX', 'A']if they missed 5 questions in that order
EDIT
Thank you again for all your help I was able to solve my problems with your help and some great answers. I used Nicks solution as that is how we are learning it.
I will try out others just so I can get used to them.
 解决方案 
Rather than using:
for i in userAnswersList:
you may find it easier to iterate through the array and check if the values are equal, such as:
for i in range(len(userAnswersList)):
    if userAnswersList[i] == correctAnswers[i]:
        correctedList.append(userAnswersList[i])
    else:
        correctedList.append('XX')
                        
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